

Britain's Prince William and his fiancee Kate Middleton pose for a photograph in St. James's Palace in London, England, on November 16. The couple will wed on Friday, April 29, 2011 at London's Westminster Abbey, Prince William's office said on Nov. 23. Suzanne Plunkett/Reuters
Prince William holds the hand of his fiancee Kate Middleton as she wears her engagement ring which once belonged to Diana, Princess of Wales, on the day their engagement was announced in London on Nov. 16. Prince William revealed that he proposed using the engagement ring of his mother to make sure Diana 'didn't miss out on the excitement.' Arthur Edwards/AP
Britain's Prince William walks with his girlfriend, Kate Middleton, at RAF Cranwell, England, in 2008. Prince William is to marry his longtime girlfriend in 2011, Buckingham Palace said on Nov. 16. William, the older son of Prince Charles and the late Princess Diana, met Ms. Middleton, daughter of middle-class self-made entrepreneurs, in college. Michael Dunlea/Reuters/FILE
Prince William and his girlfriend, Kate Middleton, leave the wedding of their friends Harry Mead and Rosie Bradford in the village of Northleach, England, on Oct. 23. Chris Ison/AP
This 2006 file photo shows Kate Middleton, who is to marry Britain's Prince William in 2011. Fiona Hanson/AP/FILE
Prince William's girlfriend, Kate Middleton, attends his passing out parade at the Royal Military Academy in Sandhurst, England, in 2006. Newscom/FILE
Prince William prepares to place a wreath on a memorial to the British soldiers killed in Afghanistan during a Remembrance Sunday ceremony at Camp Bastion in Helmand Province, Afghanistan, on Nov. 14. John Stillwell/Reuters
Prince William, in his role as commodore-in-chief, submarines, smiles as he attends a presentation ceremony to sailors at HM Naval Base Clyde, in Faslane, Scotland, on Oct. 28. David Moir/Reuters
Prince William (l.) and Camilla, Duchess of Cornwall, stand as Prince Charles (c.) salutes toward a guard of Royal Air Force airmen after a thanksgiving service for the 70th anniversary of the Battle of Britain, at Westminster Abbey in London, England, on Sept. 19. Luke MacGregor/Reuters
Britain's Prince William (r.) receives a certificate from Jonathan Dixon on Sept. 17 after his completion of a six month search and rescue helicopter training course, RAF Sea King Mk3 Operational Conversion Unit Course at 203 Squadron based at RAF Valley, Anglesey, Wales. The Prince, known as Flt. Lt. W. Wales, now is qualified for front line helicopter search and rescue operations around the United Kingdom, flying Sea King helicopters as a search and rescue platform providing a life-saving rescue service both to military personnel and civilians in Britain. Royal Air Force, MOD, SAC Faye Storer/AP
Prince William (c.) walks with other officers on the static training vessel Hindostan during a training session as he begins his two-month attachment with the Royal Navy at Britannia Royal Naval college, in Dartmouth, England, in 2008. Lefteris Pitarakis/AP/FILE
Prince William (r.) and Prince Harry stand on the balcony of Buckingham Palace during the annual Trooping the Colour parade, held to mark the birthday of Britain's Queen Elizabeth II, in central London, in June 2003. Michael Crabtree/Reuters/FILE
Prince William rallies his house soccer team at half-time during an interhouse match at Eton College in Eton, England, in June 2000. Ian Jones/Reuters/FILE
The Prince of Wales and his sons, Prince William (l.) and Prince Harry, wait for the coffin of Princess Diana to be loaded into a hearse after Diana's funeral service in Westminster Abbey in 1997, in London, England. John Gaps III/AP/FILE
Diana, Princess of Wales, and her eldest son, Prince William, wait for Prince Harry after attending the annual Easter Sunday church service at St.Georges Chapel inside Windsor Castle in London, England, in 1992. Dylan Martinez/Reuters/FILE
Diana, Princess of Wales, arrives at a memorial service with her sons William (l.) and Harry during the 50th anniversary of the Blitz of London, England, in October 1990. Chris Helgren/Reuters/FILE
Prince William makes a royal salute as he watches the scene of Trooping the Colour from the balcony of Buckingham Palace with his brother Harry and mother Princess Diana in London, England, in 1985. Roy Letkey/Reuters/FILE